How to write about a visual
You only have a minute to write and that means you can just write one sentence or concentrate on 2-3, Writing about the visual requires a process that considers
1. What is present
2. What is happening
Often these 3 are combined. For example, you may show the position of someone, the description of the person and what the person is doing all in the same sentence.
In the front of the picture, there is a an elderly woman with a long jacket, leaning forward to feed the dog in front of her.
I would advise you to aim for 3 sentneces
The first sentence is a general statement about what the picture is
The picture is a night scene of an owl landing on the ground.
2. The next sentence(s) just show anything in the background or in the picture that is not the main action
There are several dark trees in the background and, beyond it, a dqrk, blue sky, showing that it is probably close to morning.
3. After dealing with the background or other details, break to a new paragraphs to describe the main item and its action.
The owl in the center of the picture, is part white and part golden and, as it is landing, its wings are outstretched in a v shape, using them to create air friction.
Another option is to concentrate on a sentence that is long by using indirect clauses (ie adjunct clauses) one conjunction and ...ing adjective clauses
The picture, taken in the early morning when it is still dark, is of a beautifully illuminated white and golden owl landing on the ground and attempting to grasp its prey, while dark trees overlook it in the background.
One thing is clear. If you want to get the most out of the one minute you need to do many of these and develop a pattern.